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Build your own robotic super-smart lizard with artificial intelligence and an infrared sensor.
Follow the detailed manual to construct your own 37cm long robot lizard, programming the infrared sensor to make him follow you like a pet or 'escape' using the 2 way function switch. In his brilliant escape mode, he will automatically unfurl & shake his frill, drop his jaw and angrily illuminate his bicolour LED eyes as he scurries away with fast running legs and wagging tail. Taking about two hours to build, a superb kit to learn about the basic concepts of robotics - brilliant fun and highly recommended.
Eleven year old boys are still boys rather than teenagers. A serious outdoor kite makes a great present for an 11 year old, but if they are getting seriously into style, a piece of room decoration might be welcome. Construction kits that involve the opportunity to build cool, outlandish models are popular at this age.